Bought Spark in April 2010. Driven 18K KMs. So far satisfied with it. But confused/not clear about the mileage. Getting 13KMPL mileage with LPG with A/c on sometimes. Dont know whether this is good mileage. Of course, Mileage depends on various factors like traffic conditions, usage of clutch & gear, applying breaks suddenly, sudden rising(acceleration), etc.
Interiors are greatly appreciated compared to any other car in this segment.
I found spark very reliable whilie driving at 100 KMPH. And there is no vibration at that speed.